i am creating dynamic textbox onRowCreated event in gridview control, however when i try to findcontrol i get null
here is how i am dong...
protected void gvORg_RowCreated(object sender, GridViewRowEventArgs e)
{
if ((e.Row.RowState == (DataControlRowState.Edit | DataControlRowState.Alternate)) || (e.Row.RowState == DataControlRowState.Edit))
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
txBox txtReg = new TextBox();
txtReg.ID = "_registration" + e.Row.RowIndex + rowId.ToString();
txtReg.Text = reg.RegistrationToken;
e.Row.Cells[7].Controls.Add(txtReg);
}
}
}
protected void gvOrg_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
.....
....
TextBox _registration1 = gvOrg.Rows[e.RowIndex].Cells[7].FindControl("_registration" + e.RowIndex + rowId) as TextBox;
}
Have you tried to find it by:
GridView gv = (GridView)sender;
GridViewRow gvr = (GridViewRow)gv.Rows[e.RowIndex];
(TextBox)gvr.FindControl("_registration" + e.Row.RowIndex + "_" + reg.RegistrationId.ToString())
i able to fix my problem here
Related
I have a GRID that consist of columns that are populated and recently I have added some drop down columns as well to the grid. My drop down is populating with the options from the backend, but now I need to save those answers to the page itself, so the user can see it on the screen next time they arrive on the page.
GRID
protected void gvViolationsCited_OnRowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow || e.Row.RowType == DataControlRowType.Header)
{
TableCell idCell = GridViewFunctions.FindCellByDataField(e.Row, "ID");
idCell.Visible = false;
if (e.Row.RowType == DataControlRowType.DataRow)
{
ImageButton lb = (ImageButton)e.Row.FindControl("lbShowModalDialog");
long id = long.Parse(idCell.Text);
DropDownList hpvcriteria = (DropDownList)e.Row.FindControl("hpvcriteria");
hpvcriteria.DataSource = LookupDataLoaderService.Instance.LoadLookupData(LookupTables.HPV_VIOLATION_CODE);
hpvcriteria.DataBind();
}
}
}
private void PopulateViolationGrid(long caseID)
{
IList<EnforcementViolation> enforcementViolations = LovService.Instance.GetEnforcementLovList(caseID);
IEnumerator<EnforcementViolation> evEnumerator = enforcementViolations.GetEnumerator();
while (evEnumerator.MoveNext())
{
EnforcementViolation ev = evEnumerator.Current;
//txtOtherDocsViolated.Text += ev.Permit + " ";
}
gvViolationsCited.DataSource = GridViewFunctions.GenericListToDataTable<EnforcementViolation>(enforcementViolations);
gvViolationsCited.DataBind();
upnlViolationsCited.Update();
evEnumerator.Dispose();
}
I have a gridview placed on a ASP.Net WebSite, and added a column dynamically like this:
protected void gvGridView_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (DataControlRowType.DataRow == e.Row.RowType && e.Row.RowState != DataControlRowState.Edit &&
(e.Row.RowState == DataControlRowState.Normal || e.Row.RowState == DataControlRowState.Alternate))
{
TextBox tb = new TextBox();
tb.ID = "tb";
tb.Attributes.Add("runat", "server");
int i = e.Row.Cells.Count;
i = i - 1;
e.Row.Cells[i].Controls.Add(tb);
}
}
The gridview is populated, and at the end of every row the TextBox is added. When I look at the HTML Code that is delived to the Browser, I can see that the ID of every Textbox is "gv_Items_tb_X" with X being the current row index.
Now I would like to access the content that the user types in the tb on a button click. I tried following code, but it I get an exception becuase the textbox is null.
protected void btn_UpdateCount_Click(object sender, EventArgs e)
{
OI_Data_Service.OI_Data_ServiceClient sc = new OI_Data_Service.OI_Data_ServiceClient();
foreach (GridViewRow row in gv_Items.Rows)
{
if (row.RowType == DataControlRowType.DataRow)
{
TextBox tb_value = (TextBox)gv_Items.Rows[row.RowIndex].Cells[5].FindControl("gv_Items_tb_" + row.RowIndex);
sc.UpdateItemOnOpening("1", row.Cells[0].Text, tb_value.Text);
}
}
Response.Redirect("~/okay.aspx");
}
Can anyone tell my what I am doing wrong?
Thanks!
I want to findcontrol on griview after DDL OnSelectedIndexChanged event. where the target control is on the rowindex where the DDL is located..
here my codes;
protected void Page_Load(object sender, EventArgs e)
{
ArrayList Dummysource = new ArrayList() { "AA", "BB", "CC", "DD" };
if(!IsPostBack )
{
GridView1.DataSource = Dummysource;
GridView1.DataBind();
}
}
protected void ddlsample_OnSelectedIndexChanged(object sender, EventArgs e)
{
string valueComponent = (sender as DropDownList).SelectedItem.Value;
Label1.Text = valueComponent;
}
int ddlvalue;
protected void GridView1_OnRowDataBound(object sender, GridViewRowEventArgs e)
{
//Checking whether the Row is Data Row
if (e.Row.RowType == DataControlRowType.DataRow)
{
//Finding the Dropdown control.
DropDownList ddlsample = (DropDownList)e.Row.FindControl("ddlsample");
Label ilbldata = (Label)e.Row.FindControl("lbldata");
if (ddlsample != null)
{
switch(ilbldata.Text)
{
case "AA":
ddlvalue = 2;
break;
case "BB":
ddlvalue = 3;
break;
case "CC":
ddlvalue = 4;
break;
case "DD":
ddlvalue = 5;
break;
}
for (int i = 1; i <= ddlvalue; i++ )
{
ddlsample.Items.Add(i.ToString() );
}
}
}
}
protected void GridView1_SelectedIndexChanged(Object sender, EventArgs e)
{
GridView gv = sender as GridView;
gv = GridView1;
Label foo = gv.SelectedRow.FindControl("lbldata") as Label ;
Label2.Text = foo.Text;
}
the code get the value of the DropDownList selected Item. I'm Wondering on how to get the component value in the gridview. after selectedindexchange event of DDL
I made some visual photo for more clear
http://i1288.photobucket.com/albums/b493/Kasparov1/GridviewDDL_zps3721fb97.png
thanks in advance;
Try this
protected void ddlsample_OnSelectedIndexChanged(object sender, EventArgs e)
{
DropDownList ddl = (DropDownList)sender;
Label1.Text = ddl.SelectedItem.Value;
GridViewRow row = (GridViewRow)ddl.NamingContainer;
// Find your control
Control control = row.FindControl("myControl");
}
protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
DropDownList drop = GridView1.Controls[0].Controls[0].FindControl("DropDownList1") as DropDownList;
string text = drop.Items[drop.SelectedIndex].ToString();
//Find FooterRow Control
DropDownList dT = GridView1.FooterRow.FindControl("DropDownList1") as DropDownList;
string text = dT.Items[dT.SelectedIndex].ToString();
}
protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)//DropDownList1 in GridVied
{
//Find FooterRow Control
DropDownList drop = GridView1.FooterRow.FindControl("DropDownList1") as DropDownList;
string text = drop.Items[drop.SelectedIndex].ToString();
//find normal DropDownList1
DropDownList drop1 = GridView1.FindControl("DropDownList1") as DropDownList;
string text = drop1.Items[drop1.SelectedIndex].ToString();
}
//ADD list in GRIDVIEW dropdownlist at run time
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
DropDownList ddl = (DropDownList)e.Row.FindControl("DropDownList1");//Gridview DropDownList
ddl.Items.Add("- - Select - -");
ddl.Items.Add(new ListItem("ABCD"));
ddl.Items.Add(new ListItem("EFGH"));
}
I have a GridView which uses the Alternatingrowstyle property, but I also would like to higlight each row when the user Edit the row, but using this code, it only highlights the rows that don't have the Alternatingrowstyle.
protected void gv_RowEditing(object sender, GridViewEditEventArgs e)
{
gv.Rows[e.NewEditIndex].BackColor = System.Drawing.Color.Yellow;
gv.EditIndex = e.NewEditIndex;
if (e.NewEditIndex % 2 == 0)
{
gv.Rows[e.NewEditIndex].BackColor = System.Drawing.Color.Yellow;
}
}
I have a lot of success with gridview highlighting using Matt Berseth's samples and in particular, this extender
if ((e.Row.RowType == DataControlRowType.DataRow & ((e.Row.RowState & DataControlRowState.Edit) == DataControlRowState.Edit))) {
e.Row.BackColor = Drawing.Color.Yellow;
}
<asp:GridView ID="GridView1" runat="server" >
<asp:TemplateField HeaderText="Token" SortExpression="Token" HeaderStyle-Width="100px">
<ItemTemplate>
</ItemTemplate>
</asp:TemplateField>
</asp:GridView>
update:
after i view the source code of the page thsi is what i see the id of a textbox that i have created dynamic.
ctl00_ContentPlaceHolder1_tabControl_tabUsers_MyControl1_gv_ctl02__token0_3
OnRowUpdating:
TextBox _token = gvOrg.Rows[e.RowIndex].Cells[7].FindControl("_token " + e.RowIndex + "_" + rowId) as TextBox;
Update end:
i am adding few textbox dynamic in OnRowDataBound and whe i try getting the value then i am getting null
here is my code:
protected void gv_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
for (int rowId = 0; rowId < 5; rowId++)
{
TextBox _token = gvOrg.Rows[e.RowIndex].Cells[7].FindControl("_token" + rowId) as TextBox;
}
}
protected void gv_RowDataBound(object sender, GridViewRowEventArgs e)
{
if ((e.Row.RowState == (DataControlRowState.Edit | DataControlRowState.Alternate)) || (e.Row.RowState == DataControlRowState.Edit))
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
for (int rowId = 0; rowId < 5; rowId++)
{
TextBox txtBox = new TextBox();
txtBox.ID = "_token" + rowId;
txtBox.Text = "token" + rowId;
e.Row.Cells[7].Controls.Add(txtBox);
}
}
here is how i able to fix the problem: instead of creating in rowdatabound i am creating on RowCreated, hope this will help others.
protected void gridviwe1_RowCreated(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
for (int rowId = 0; rowId < 5; rowId++)
{
TextBox txtBox = new TextBox();
txtBox.ID = "_registration" + e.Row.RowIndex + "_" + rowId;
txtBox.Text = "_registration" + e.Row.RowIndex + "_" + rowId;
e.Row.Cells[7].Controls.Add(txtBox);
}
}
}
You are creating textbox for each row - 5 of them... and in each row, each of those textboxes has the same id as the other rows. You need to at the row's index, for example, to the name of the textboxes when you create them. You can't have a control on the page with the same id, or else it can't be found correctly.
Here is one way to do that.
protected void gv_RowDataBound(object sender, GridViewRowEventArgs e)
{
if ((e.Row.RowState == (DataControlRowState.Edit | DataControlRowState.Alternate)) || (e.Row.RowState == DataControlRowState.Edit))
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
for (int rowId = 0; rowId < 5; rowId++)
{
TextBox txtBox = new TextBox();
txtBox.ID = "_token" + e.Row.RowIndex + "_" + rowId;
txtBox.Text = "token" + rowId;
e.Row.Cells[7].Controls.Add(txtBox);
}
}
I can't test that this is the complete solution, but it is a place to start.